Centrifugal



C. SCHAUM CENTRIFUGAL Filed Ja`x1.15. 1927 April 24, 1928. 1,667,493

.abois one @flaca Patented Apr. 24, 192s.

UNITED STATES CARL soHAma, or PHILADELPHIA, PENNSYLVANIA, AssrGNoE roFLETCHER wonxs,

IN COBPOBATED, F SYLVANIA..

PHILADELPHIA, PENNSYLVANIA, A AC'OIxEORAlION OF PENN- GENTRIEUGAL.

.Application lediannary 15, 19.27. Serial No. 161,391.

My invention relates to an improvement in centrifugals or extractors,and has for one of its objects. the provision in such a devlce of animproved construction whereby the operation and servicing of the sameare 1mproved.

A .further object of my inventlon .1s the provision of an extractor orcentrifugal which vis steam-driven, means being provided, however,whereby the entry of steam to the basket of the centrifugal isprevented, thereby preventing injury to the contents thereof. U

lA still further object of my invention 1s the provision of acentrifugal wherein the tub 1s divided into upper and lower com`partments out of communication with each other at alll times, whichpermits of a steain drive for the basket which is mounted wlthin one ofthese compartments without the entry of steam into the basket.

Another object of my invention 1s the provision of a centrifugal whichis under*- supported but which does not requ1re the pit customarilyemployed.

In general, my invention provides a centrifugal comprising a Stationarytub provided wi -h upper and lower compartmentsout of communication witheach other. In the`upper compartment of the tub-I provlde anextractorbasket which is supported/on and attached to a rotatable shaft extendingvertically of the tub. A portion' of this shaft extends into the lowercompartment of the tub, and has attached to ita series of turbine bladesto which Steam is admitted to drive 'the basket.`

This provides an exceedingly compact and eicient machine in which steammay be em- 0 ployed as the motive fluid without danger of injuryv to thecontents of the extractor basket.

In the accompanying drawings I have shown two embodiments of myinvention,

Fig. 1 illustrating one embodiment in part sectional elevation;

Fig. 2 being a section on the line 2 2 of Fig. 1, and

Fig. 3 illustrating a modification. Referring to the drawings in detail,and first of all to Figs. 1 and 2, 1 'designates an extractor tubconstructed 'so as to provide two compartments, an upper compartment 2 1and a lower compartment 3. These two comsj partments are maintained outof communication with each other at all times by a wall or partition 4.This partition is shaped so as to provide ahub or bearing v5. Thisbearing or hub is stationary and extends vertically of the tub. 00

In the upper compartment'2 of the tub I provide a rotatable centrifugalbasket 6, rovided with a brake B for bringing the tu to rest, and with avertically-extending centrally-located portion 7, which provides a hubadapted to telescope and to rotate about the hub 5 of the centrifugaltub.

The centrifugalA is provided with a su porting shaft 8 extendingverticall oft e machine and passing throu h the ub 7 0f the basket andtheI hub or caring 5 of the tub. lAt the upper end of this shaft is agovernor comprising governor arms 9, governor spring 10, and a cap 11,the latter recelving a regulating rod 12 extending from top to bottom ofthe shaft 8 and projecting from the lower end of the shaft as indicatedat 13. They rod 12, where it passes through the cap 11, isscrew-threaded so as to be adjusted longitudinally whereby the governoraction as a. whole may be regulated.

On the lower end of the supporting Shaft 8 is a rotor 14 carryingturbine blades 15. The rotor is keyed to the sha'ft 8, as indicated at16. The shaft Sis also .ke ed to the hub 7 of the basket, as indicated a17.

The hubor dome 7 of the basket 6 is provided with a cover 18 so that theentire mechanism so far described is whollyenclosed andso that thesupporting shaft 8 maybe said to lie wholly within the-tub 1.

Steam is admitted tothe turbine blades 15 through a pipe 19 and port`20,and the entry of steam to the machine is controlled by a valve 21. Theystem of this valve is engaged by a lever 22 which is in the form of abell crank lever and the` long arm of which is adapted to be actuatedto' close the valve b means of`a rin 23. The action of t-hls spring in adlrectlon to close the valveA 21 is controlled .by the governor alreadymen tioned or, to be exact, by the governor rod 18.

The entire machine is supported on hangers which may be' of usualconstruction for 105 the supplort of centrifugals, one of these hangersaving been illustrated at 24.

When steam is admitted to the vanes of the turbine through the pipe 19ast the valve 21, it will be apparent that e rotor 14 win be rotated,andinasmueh this-r0.-

tor is ke ed to the supporting shaft 8, the

' centrifugal which is extremely simple in con-- struction, which iswholly enclosed, and inasmuch as the two compartments or chambers 2 and3 of the tub are separated from each Vother by the part-ition'fl, thesteam admitted to the lower compartment 3 cannot reach the interior ofthe basket,` thereby preserving the basket, or rather the contentsthereof, against injury from the steam.

In the embodiment of my invention' just described, the supporting shaft8 is rotary but in the form of my invention illustrated in Fig. 3, thesupporting shaft, which in this inst-ance is designated 8', isstationary.` In this embodiment of my invention the basket 6" isrotatable onball bearings 25 about the l stationary stationarysupporting shaft'8. The rotor 14 is ri dly secured to the basket 6 asindi-- cate at 26. Turbine vanes or blades v15' are vri id with respectto ,the basket and rotor.

e intake steam nozzle is designated 19. and it will be seen that thisisset into the supporting shaft 8 and communicates wit a. port 27extending Yvertically of this shaft,- the steam traversing this port andentering a stationaryynozzle 28 interposed in the space between thebottom of the basket 6 and the rotor 14', through which it passes toimpinge on the vanes 15. This will cause the rotor 14 together with thebasket 6 to be rotated. The entry of steam to the nozzle 28 iscontrolled by a valve 21 which in turn is controlled by a overnorspindle or rod 13. The steam e austs through exhaust port 29. In thisarrangement, therefore, I

ave provided an apparatus in which the centhe valve 21 toward closedposi-' trifugal basket is steam driven and infwhich steam is preventedfrom entering the basket owing to the fact that the rotor 14 and the'bottom of the basket 6 are imprforate. 'It will be seen also that thesupporting shaft 8 .in this embodiment of ,my invention is stationaryas. distinguished from the rotary shaft of Fig. 1. It is to beunderstood that changes may be made in the details of constructionand'farrangement of parts herein described within the purview of myinvention.

What I claim is:

1.-A`cen`trifugal comprising a stationary tub providing upper and lowernon-comf municating chambers or compartments, 'a shaft lying whollywithin the confines of said tub, a portion ofthe shaft lying within theupper and the remainder :within the lower of said chambers, a rotatablebasket in theu per yof said chambers and attached to said ls aft,turbine blades inthe lower compartmentor chamber of the tub carried bysaidV shaft to drive the shaft and thereby to rotate said basket, asteam valve in the lower chamber for controllingv the admission of steamVto said blades, and 'a'governor in. the upper chamber controlling saidvalve. j f

2. A centrifugal comprising a stationary tub comprising upper and lowercompartments, a rotatable asket in the lpper of said compartments, arotatable shaft lying wholly within the tub, a portion thereof lying inthe upper compartment, the remainder in the lower compartment, means forafiixing the shaft to said basket, turbine v"blades in the lowercompartment attached to said shaft, the lower part .of said tub beingprovided with inlet and exhaustports for the entrance and exhaust ofsteam to and from the lower compartment of the tub to drive said shaftand thereby' to drive said basket, and valve mechanism controlled fromthe upper of said compartments for controlling said inlet port.

This specification signed this 10th day of January, 1927. l

' CARL SCHAU'M.

